[ESS] polymode/ess-mode interaction

[Vitalie Spinu]

Hi Chris,

Something along

  (autoload 'R-mode "ess-r-d" "(Autoload)" t)

should help.

Autoloads should be coming soon to ESS, so this will be automatically
solved in the future.

  Vitalie

 >>> chris warth on Thu, 16 Apr 2015 17:16:07 -0700 wrote:

 > I noticed that polymode behaves differently after visiting *.R files than
 > it does before visiting a *.R file.
 > The difference is caused by ess-mode defining the symbol 'r-mode' which
 > polymode tries to use.  If ESS hasn't been loaded yet, 'r-mode' is not
 > defined and polymode falls back to using Fundamental mode instead (after a
 > warning).

 > How can I ensure that r-mode from ESS is always defined and available
 > before loading a *.Rmd file with polymode?

 > I'm trying to do this in a hook to avoid loading ESS unless I really need
 > it.
 > I tried this without success,

 >      (add-hook 'poly-markdown+r-mode-hook
 >    (lambda ()
 >  (message "in poly-markdown+r-mode-hook")
 >  (require 'ess)))

 > Also requiring the more specific 'ess-r-d in the poly-markdown+r-mode-hook
 > does not seem to help.

 > Ideas?  Thanks in advance!